72 \frametitle{Scala on Lab Computers}

    72 \frametitle{Assignments}

    73 

    73 

    74 Avoid at all costs, even in comments

    74 Don't change anything with the templates!\bigskip

    75 

    76 Avoid at all costs:

    77 \item \texttt{var} \only<2>{$\quad\Rightarrow\;$\texttt{Var}}

    79 \item \texttt{var} 

    78 \item \texttt{return} \only<2>{$\quad\Rightarrow\;$\texttt{Return}}

    80 \item \texttt{return} 

    79 \item \texttt{.par}

    81 \item \texttt{mutable}  

    82 \item \texttt{mutable}

    82 \end{itemize}

    83 \item \texttt{.par}  

    83 

    84 \end{itemize}\pause\bigskip

    84 \end{frame}

    85 

    85 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

    86 

    86 

    87 \mbox{}\hfill\textit{``Scala --- \underline{S}lowly \underline{c}ompiled 

    88 \underline{a}cademic \underline{la}nguage''}\smallskip\\

    89 \mbox{}\hfill\textit{ --- a joke(?) found on Twitter}\bigskip

    90 \end{frame}

    91 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

    92 

    93 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

    94 \begin{frame}[t]

    95 \frametitle{Email: Hate 'val'}

    96 

    97 \mbox{}\\[-25mm]\mbox{}

    98 

    99 \begin{center}

   100   \begin{bubble}[10.5cm]

   101   Subject: \textbf{Hate '\textbf{\texttt{val}}'}\hfill 01:00 AM\medskip\\

   102 

   103   Hello Mr Urban,\medskip\\

   104 

   105   I just wanted to ask, how are we suppose to work

   106   with the completely useless \textbf{\texttt{val}}, that can’t be changed ever? Why is

   107   this rule active at all? I’ve spent 4 hours not thinking on the

   108   coursework, but how to bypass this annoying rule. What’s the whole

   109   point of all these coursework, when we can’t use everything Scala

   110   gives us?!?\medskip\\

   111 

   112   Regards.\\

   113   \mbox{}\hspace{5mm}\textcolor{black!50}{<<deleted>>}\\

   114   \end{bubble}

   115 \end{center}

   116 

   117 \end{frame}

   118 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%     

   119 

   120 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

   121 \def\firstcircle{(0,0) circle (1.4cm)}

   122 \def\secondcircle{(0:2cm) circle (1.4cm)}

   123 \colorlet{circle edge}{blue!50}

   124 \colorlet{circle area}{blue!20}

   125 

   126 \tikzset{filled/.style={fill=circle area, draw=circle edge, thick},

   127     outline/.style={draw=circle edge, thick}}

   128 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

   129 \begin{frame}[c,fragile]

   130 \frametitle{Par: Intersections}

   131 

   132 \begin{textblock}{6}(1,2)

   133 \begin{tikzpicture}

   134   \draw[outline] \firstcircle node {$A$};

   135   \node[anchor=south] at (current bounding box.north)

   136     {$A = \{1,2,3,\ldots,1000\}$};

   137 \end{tikzpicture}

   138 \end{textblock}

   139 

   140 \begin{textblock}{6}(8,2)

   141 \begin{tikzpicture}

   142   \draw[outline] \secondcircle node {$B$};

   143   \node[anchor=south] at (current bounding box.north)

   144     {$B = \{1,5,9,13,\ldots,997\}$};

   145 \end{tikzpicture}

   146 \end{textblock}

   147 

   148 \begin{textblock}{6}(3.3,9)

   149 \begin{tikzpicture}

   150     \begin{scope}

   151         \clip \firstcircle;

   152         \fill[filled] \secondcircle;

   153     \end{scope}

   154     \draw[outline] \firstcircle node {$A$};

   155     \draw[outline] \secondcircle node {$B$};

   156     \node[anchor=north] at (current bounding box.south)

   157     {How many elements are in $A \cap B$?};

   158 \end{tikzpicture}

   159 \end{textblock}  

   160 

   161 \end{frame}

   162 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

   222 My Scala Office Hours: Thursdays 11 -- 13

   298 My Office Hours: Mondays 12 -- 14